Bip39 Words. The only cause those letters are listed is to make it a lot easier for our human brains to study them and possibly memorize our recovery phrase. The security of the copyright property is extremely dependent on the security of the password and seed phrase. BIP 39 wordlist https://fernandomxhrc.wikilima.com/988345/the_anatomy_of_a_bip39_phrase_entropy_phrases_and_security